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atari8: more fixes, POKEY timers, vscroll, irq flag in 6502

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This commit is contained in:
Steven Hugg 2022-08-31 11:19:12 -05:00
parent 586a793df5
commit 8338c3a3d7
9 changed files with 630 additions and 379 deletions
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1
doc/notes.txt
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@ -549,6 +549,7 @@ Use tick() and refresh(), not callbacks
Show current datum when using READ
Use https://codemirror.net/doc/manual.html#markText
Reset doesn't break @ start unless debugging tools expanded
Single-step can un-sync frame/scanline timing
PORTING CC65 TO IDE

8
src/common/baseplatform.ts
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@ -282,7 +282,7 @@ export abstract class BaseDebugPlatform extends BasePlatform {
setDebugCondition(debugCond : DebugCondition) {
this.setBreakpoint('debug', debugCond);
}
restartDebugging() {
resetDebugging() {
if (this.debugSavedState) {
this.loadState(this.debugSavedState);
} else {
@ -291,6 +291,9 @@ export abstract class BaseDebugPlatform extends BasePlatform {
this.debugClock = 0;
this.debugCallback = this.getDebugCallback();
this.debugBreakState = null;
}
restartDebugging() {
this.resetDebugging();
this.resume();
}
preFrame() {
@ -865,7 +868,8 @@ export abstract class BaseMachinePlatform<T extends Machine> extends BaseDebugPl
}
advance(novideo:boolean) {
var steps = this.machine.advanceFrame(this.getDebugCallback());
let trap = this.getDebugCallback();
var steps = this.machine.advanceFrame(trap);
if (!novideo && this.video) this.video.updateFrame();
if (!novideo && this.serialVisualizer) this.serialVisualizer.refresh();
return steps;

16
src/common/cpu/MOS6502.ts
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@ -1887,14 +1887,17 @@ export var _MOS6502 = function() {
PC = (PC-1) & 0xffff;
}
this.setIRQ = function() {
instruction = IRQ();
T = 1;
PC = (PC-1) & 0xffff;
if (!I) { // only if not disabled
instruction = IRQ();
T = 1;
PC = (PC-1) & 0xffff;
}
}
this.getSP = function() { return SP; }
this.getPC = function() { return (PC-1) & 0xffff; }
this.getT = function() { return T; }
this.isHalted = function() { return opcodes[opcode] == "uKIL"; }
this.isPCStable = function() {
return T == 0;
@ -1955,7 +1958,9 @@ export class MOS6502 implements CPU, ClockBased, SavesState<MOS6502State>, Inter
this.interruptType = 0;
}
interrupt(itype:number) {
this.interruptType = itype;
if (this.interruptType != MOS6502Interrupts.NMI) {
this.interruptType = itype;
}
}
NMI() {
this.interrupt(MOS6502Interrupts.NMI);
@ -1969,6 +1974,9 @@ export class MOS6502 implements CPU, ClockBased, SavesState<MOS6502State>, Inter
getPC() {
return this.cpu.getPC();
}
isHalted() {
return this.cpu.isHalted();
}
saveState() {
var s = this.cpu.saveState();
s.it = this.interruptType;

19
src/common/emu.ts
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@ -1,5 +1,5 @@
import { hex, clamp, lpad } from "./util";
import { hex, clamp, lpad, RGBA } from "./util";
import { SourceLocation } from "./workertypes";
import { VirtualList } from "./vlist"
@ -738,3 +738,20 @@ export class VirtualTextScroller {
}
}
// https://forums.atariage.com/topic/107853-need-the-256-colors/page/2/
export function gtia_ntsc_to_rgb(val: number) {
const gamma = 0.9;
const bright = 1.1;
const color = 60;
let cr = (val >> 4) & 15;
let lm = val & 15;
let crlv = cr ? color : 0;
let phase = ((cr - 1) * 25 - 38) * (2 * Math.PI / 360);
let y = 256 * bright * Math.pow((lm + 1) / 16, gamma);
let i = crlv * Math.cos(phase);
let q = crlv * Math.sin(phase);
var r = y + 0.956 * i + 0.621 * q;
var g = y - 0.272 * i - 0.647 * q;
var b = y - 1.107 * i + 1.704 * q;
return RGBA(clamp(0,255,r), clamp(0,255,g), clamp(0,255,b));
}

137
src/machine/atari7800.ts
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@ -1,7 +1,7 @@
import { MOS6502, MOS6502State } from "../common/cpu/MOS6502";
import { BasicMachine, RasterFrameBased, Bus, ProbeAll } from "../common/devices";
import { KeyFlags, newAddressDecoder, padBytes, Keys, makeKeycodeMap, newKeyboardHandler, EmuHalt, dumpRAM } from "../common/emu";
import { KeyFlags, newAddressDecoder, padBytes, Keys, makeKeycodeMap, newKeyboardHandler, EmuHalt, dumpRAM, gtia_ntsc_to_rgb } from "../common/emu";
import { TssChannelAdapter, MasterAudio, POKEYDeviceChannel } from "../common/audio";
import { hex, rgb2bgr } from "../common/util";
@ -525,141 +525,8 @@ export class Atari7800 extends BasicMachine implements RasterFrameBased {
///
const ATARI_NTSC_RGB = [
0x000000, // 00
0x404040, // 02
0x6c6c6c, // 04
0x909090, // 06
0xb0b0b0, // 08
0xc8c8c8, // 0A
0xdcdcdc, // 0C
0xf4f4f4, // 0E
0x004444, // 10
0x106464, // 12
0x248484, // 14
0x34a0a0, // 16
0x40b8b8, // 18
0x50d0d0, // 1A
0x5ce8e8, // 1C
0x68fcfc, // 1E
0x002870, // 20
0x144484, // 22
0x285c98, // 24
0x3c78ac, // 26
0x4c8cbc, // 28
0x5ca0cc, // 2A
0x68b4dc, // 2C
0x78c8ec, // 2E
0x001884, // 30
0x183498, // 32
0x3050ac, // 34
0x4868c0, // 36
0x5c80d0, // 38
0x7094e0, // 3A
0x80a8ec, // 3C
0x94bcfc, // 3E
0x000088, // 40
0x20209c, // 42
0x3c3cb0, // 44
0x5858c0, // 46
0x7070d0, // 48
0x8888e0, // 4A
0xa0a0ec, // 4C
0xb4b4fc, // 4E
0x5c0078, // 50
0x74208c, // 52
0x883ca0, // 54
0x9c58b0, // 56
0xb070c0, // 58
0xc084d0, // 5A
0xd09cdc, // 5C
0xe0b0ec, // 5E
0x780048, // 60
0x902060, // 62
0xa43c78, // 64
0xb8588c, // 66
0xcc70a0, // 68
0xdc84b4, // 6A
0xec9cc4, // 6C
0xfcb0d4, // 6E
0x840014, // 70
0x982030, // 72
0xac3c4c, // 74
0xc05868, // 76
0xd0707c, // 78
0xe08894, // 7A
0xeca0a8, // 7C
0xfcb4bc, // 7E
0x880000, // 80
0x9c201c, // 82
0xb04038, // 84
0xc05c50, // 86
0xd07468, // 88
0xe08c7c, // 8A
0xeca490, // 8C
0xfcb8a4, // 8E
0x7c1800, // 90
0x90381c, // 92
0xa85438, // 94
0xbc7050, // 96
0xcc8868, // 98
0xdc9c7c, // 9A
0xecb490, // 9C
0xfcc8a4, // 9E
0x5c2c00, // A0
0x784c1c, // A2
0x906838, // A4
0xac8450, // A6
0xc09c68, // A8
0xd4b47c, // AA
0xe8cc90, // AC
0xfce0a4, // AE
0x2c3c00, // B0
0x485c1c, // B2
0x647c38, // B4
0x809c50, // B6
0x94b468, // B8
0xacd07c, // BA
0xc0e490, // BC
0xd4fca4, // BE
0x003c00, // C0
0x205c20, // C2
0x407c40, // C4
0x5c9c5c, // C6
0x74b474, // C8
0x8cd08c, // CA
0xa4e4a4, // CC
0xb8fcb8, // CE
0x003814, // D0
0x1c5c34, // D2
0x387c50, // D4
0x50986c, // D6
0x68b484, // D8
0x7ccc9c, // DA
0x90e4b4, // DC
0xa4fcc8, // DE
0x00302c, // E0
0x1c504c, // E2
0x347068, // E4
0x4c8c84, // E6
0x64a89c, // E8
0x78c0b4, // EA
0x88d4cc, // EC
0x9cece0, // EE
0x002844, // F0
0x184864, // F2
0x306884, // F4
0x4484a0, // F6
0x589cb8, // F8
0x6cb4d0, // FA
0x7ccce8, // FC
0x8ce0fc // FE
];
var COLORS_RGBA = new Uint32Array(256);
var COLORS_WEB = [];
for (var i=0; i<256; i++) {
COLORS_RGBA[i] = ATARI_NTSC_RGB[i>>1] | 0xff000000;
COLORS_WEB[i] = "#"+hex(rgb2bgr(ATARI_NTSC_RGB[i>>1]),6);
COLORS_RGBA[i] = gtia_ntsc_to_rgb(i);
}

79
src/machine/atari8.ts
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@ -2,14 +2,15 @@ import { newPOKEYAudio, TssChannelAdapter } from "../common/audio";
import { EmuState, Machine } from "../common/baseplatform";
import { MOS6502 } from "../common/cpu/MOS6502";
import { AcceptsKeyInput, AcceptsPaddleInput, AcceptsROM, BasicScanlineMachine, FrameBased, Probeable, RasterFrameBased, TrapCondition, VideoSource } from "../common/devices";
import { dumpRAM, KeyFlags, Keys, makeKeycodeMap, newAddressDecoder, newKeyboardHandler } from "../common/emu";
import { dumpRAM, EmuHalt, KeyFlags, Keys, makeKeycodeMap, newAddressDecoder, newKeyboardHandler } from "../common/emu";
import { hex, lpad, lzgmini, rgb2bgr, safe_extend, stringToByteArray } from "../common/util";
import { BaseWASIMachine } from "../common/wasmplatform";
import { ANTIC, MODE_SHIFT } from "./chips/antic";
import { CONSOL, GTIA, TRIG0 } from "./chips/gtia";
import { POKEY } from "./chips/pokey";
const ATARI8_KEYMATRIX_INTL_NOSHIFT = [
Keys.VK_L, Keys.VK_J, Keys.VK_SEMICOLON, Keys.VK_F1, Keys.VK_F2, Keys.VK_K, Keys.VK_SLASH, Keys.VK_TILDE,
Keys.VK_L, Keys.VK_J, Keys.VK_SEMICOLON, Keys.VK_F1, Keys.VK_F2, Keys.VK_K, Keys.VK_BACK_SLASH, Keys.VK_TILDE,
Keys.VK_O, null, Keys.VK_P, Keys.VK_U, Keys.VK_ENTER, Keys.VK_I, Keys.VK_MINUS, Keys.VK_EQUALS,
Keys.VK_V, Keys.VK_F8, Keys.VK_C, Keys.VK_F3, Keys.VK_F4, Keys.VK_B, Keys.VK_X, Keys.VK_Z,
Keys.VK_4, null, Keys.VK_3, Keys.VK_6, Keys.VK_ESCAPE, Keys.VK_5, Keys.VK_2, Keys.VK_1,
@ -62,15 +63,15 @@ export class Atari800 extends BasicScanlineMachine {
rom: Uint8Array;
bios: Uint8Array;
bus;
pokey;
audio_pokey;
audioadapter;
antic: ANTIC;
gtia: GTIA;
irq_pokey: POKEY;
inputs = new Uint8Array(4);
linergb = new Uint32Array(this.canvasWidth);
lastdmabyte = 0;
keycode = 0;
irqstatus = 0;
cart_80 = false;
cart_a0 = false;
// TODO: save/load vars
@ -83,10 +84,11 @@ export class Atari800 extends BasicScanlineMachine {
this.bus = this.newBus();
this.connectCPUMemoryBus(this.bus);
// create support chips
this.antic = new ANTIC(this.readDMA.bind(this));
this.antic = new ANTIC(this.readDMA.bind(this), this.antic_nmi.bind(this));
this.gtia = new GTIA();
this.pokey = newPOKEYAudio(1);
this.audioadapter = new TssChannelAdapter(this.pokey.pokey1, this.audioOversample, this.sampleRate);
this.irq_pokey = new POKEY(this.pokey_irq.bind(this), () => this.antic.h);
this.audio_pokey = newPOKEYAudio(1);
this.audioadapter = new TssChannelAdapter(this.audio_pokey.pokey1, this.audioOversample, this.sampleRate);
this.handler = newKeyboardHandler(
this.inputs, ATARI8_KEYCODE_MAP, this.getKeyboardFunction(), true);
}
@ -123,7 +125,6 @@ export class Atari800 extends BasicScanlineMachine {
this.antic.reset();
this.gtia.reset();
this.keycode = 0;
this.irqstatus = 0;
}
read(a) {
@ -144,34 +145,35 @@ export class Atari800 extends BasicScanlineMachine {
this.bus.write(a, v);
}
readPokey(a: number) {
//console.log(hex(a), hex(this.saveState().c.PC));
switch (a) {
switch (a & 0xf) {
case 9: // KBCODE
return this.keycode & 0xff;
case 14: // IRQST
return this.irqstatus ^ 0xff;
case 15: // SKSTAT
return ((~this.keycode >> 6) & 0x4) | ((~this.keycode >> 3) & 0x8) | 0x12;
default:
return 0xff;
return this.irq_pokey.read(a);
}
}
readPIA(a: number) {
if (a == 0 || a == 1) { return ~this.inputs[a]; }
}
writePokey(a, v) {
switch (a) {
//case 13: this.sendIRQ(0x18); break; // serial output ready IRQ (TODO)
case 14: this.irqstatus = 0; break;
}
this.pokey.pokey1.setRegister(a, v);
this.audio_pokey.pokey1.setRegister(a, v);
this.irq_pokey.write(a, v);
}
startScanline() {
// TODO: if (this.antic.h != 0) throw new Error(this.antic.h+"");
//if (this.cpu.isHalted()) throw new EmuHalt("CPU HALTED");
// set GTIA switch inputs
this.gtia.sync();
for (let i = 0; i < 4; i++)
this.gtia.readregs[TRIG0 + i] = (~this.inputs[2] >> i) & 1;
this.gtia.readregs[CONSOL] = ~this.inputs[3] & this.gtia.regs[CONSOL];
// advance POKEY audio
this.audio && this.audioadapter.generate(this.audio);
// advance POKEY IRQ timers
this.irq_pokey.advanceScanline();
}
drawScanline() {
@ -184,15 +186,10 @@ export class Atari800 extends BasicScanlineMachine {
advanceCPU(): number {
// update ANTIC
if (this.antic.clockPulse()) {
// ANTIC DMA cycle, update GTIA
this.gtia.updateGfx(this.antic.h - 1, this.lastdmabyte); // HALT pin
this.probe.logClocks(1);
// DMA cycle
} else {
// update CPU, NMI?
if (this.antic.nmiPending) {
this.cpu.NMI();
this.probe.logInterrupt(1);
this.antic.nmiPending = false;
}
super.advanceCPU();
}
// update GTIA
@ -204,7 +201,6 @@ export class Atari800 extends BasicScanlineMachine {
this.gtia.clockPulse2();
this.linergb[xofs++] = this.gtia.rgb;
}
this.gtia.updateGfx(this.antic.h - 1, this.lastdmabyte);
let xofs = this.antic.h * 4 - this.firstVisibleClock;
let bp = MODE_SHIFT[this.antic.mode];
if (bp < 8 || (xofs & 4) == 0) { this.gtia.an = this.antic.shiftout(); }
@ -223,10 +219,10 @@ export class Atari800 extends BasicScanlineMachine {
this.ram.set(state.ram);
this.antic.loadState(state.antic);
this.gtia.loadState(state.gtia);
this.irq_pokey.loadState(state.pokey);
this.loadControlsState(state);
this.lastdmabyte = state.lastdmabyte;
this.keycode = state.keycode;
this.irqstatus = state.irqstatus;
}
saveState() {
return {
@ -234,10 +230,10 @@ export class Atari800 extends BasicScanlineMachine {
ram: this.ram.slice(0),
antic: this.antic.saveState(),
gtia: this.gtia.saveState(),
pokey: this.irq_pokey.saveState(),
inputs: this.inputs.slice(0),
lastdmabyte: this.lastdmabyte,
keycode: this.keycode, // TODO: inputs?
irqstatus: this.irqstatus,
};
}
loadControlsState(state) {
@ -258,12 +254,7 @@ export class Atari800 extends BasicScanlineMachine {
switch (category) {
case 'ANTIC': return ANTIC.stateToLongString(state.antic);
case 'GTIA': return GTIA.stateToLongString(state.gtia);
case 'POKEY': {
let s = '';
for (let i = 0; i < 16; i++) { s += hex(this.readPokey(i)) + ' '; }
s += "\nIRQ Status: " + hex(this.irqstatus) + "\n";
return s;
}
case 'POKEY': return POKEY.stateToLongString(state.pokey);
}
}
getKeyboardFunction() {
@ -271,7 +262,7 @@ export class Atari800 extends BasicScanlineMachine {
if (flags & (KeyFlags.KeyDown | KeyFlags.KeyUp)) {
var keymap = ATARI8_KEYMATRIX_INTL_NOSHIFT;
if (key == Keys.VK_F9.c) {
this.sendIRQ(0x80); // break IRQ
this.irq_pokey.generateIRQ(0x80); // break IRQ
return true;
}
for (var i = 0; i < keymap.length; i++) {
@ -281,7 +272,7 @@ export class Atari800 extends BasicScanlineMachine {
if (flags & KeyFlags.Ctrl) { this.keycode |= 0x80; }
if (flags & KeyFlags.KeyDown) {
this.keycode |= 0x100;
this.sendIRQ(0x40); // key pressed IRQ
this.irq_pokey.generateIRQ(0x40); // key pressed IRQ
console.log(o, key, code, flags, hex(this.keycode));
return true;
}
@ -290,15 +281,15 @@ export class Atari800 extends BasicScanlineMachine {
};
}
}
sendIRQ(mask: number) {
// irq enabled?
if (this.pokey.pokey1.getRegister(0xe) & mask) {
this.irqstatus = mask;
this.cpu.IRQ();
this.probe.logInterrupt(2);
// TODO? if (this.antic.h == 4) { console.log("NMI blocked!"); }
}
pokey_irq() {
this.cpu.IRQ();
this.probe.logInterrupt(2);
}
antic_nmi() {
this.cpu.NMI();
this.probe.logInterrupt(1);
}
loadROM(rom: Uint8Array) {
// TODO: support other than 8 KB carts
// support 4/8/16/32 KB carts

99
src/machine/chips/antic.ts
View File

@ -48,14 +48,13 @@ export const MODE_SHIFT = [0, 0, 1, 1, 2, 2, 2, 2, 8, 4, 4, 2, 2, 2, 2, 1];
export class ANTIC {
read: (address: number) => number; // bus read function
nmi: () => void; // generate NMI
regs = new Uint8Array(0x10); // registers
pfwidth: number; // playfield width
left: number;
right: number; // left/right clocks for mode
nmiPending: boolean = false;
dma_enabled: boolean = false;
dliop: number = 0; // dli operation
mode: number = 0; // current mode
@ -78,9 +77,11 @@ export class ANTIC {
dmaidx: number = 0;
output: number = 0;
dramrefresh = false;
vscroll = 0;
constructor(readfn) {
constructor(readfn, nmifn) {
this.read = readfn; // bus read function
this.nmi = nmifn; // NMI function
}
reset() {
this.regs.fill(0);
@ -103,24 +104,22 @@ export class ANTIC {
static stateToLongString(state): string {
let s = "";
s += "H: " + lpad(state.h, 3) + " V: " + lpad(state.v, 3) + "\n";
s += "DLIOp: " + hex(state.dliop, 2) + " Lines: " + state.yofs + "/" + state.linesleft + "\n";
s += "DLIOp: " + hex(state.dliop, 2) + " Lines: " + state.yofs + "/" + state.linesleft;
s += " DMA " + (state.dma_enabled ? "ON " : "off") + "\n";
s += "Addr: " + hex(state.scanaddr, 4) + "\n";
s += dumpRAM(state.regs, 0, 16).replace('$00', 'Regs');
return s;
}
setReg(a: number, v: number) {
this.regs[a] = v;
switch (a) {
case WSYNC:
this.regs[WSYNC] = 0xff;
break;
case DMACTL:
this.pfwidth = this.regs[DMACTL] & 3;
break;
return; // this is readonly (we reset it)
case NMIRES:
this.regs[NMIST] = 0x1f;
break;
return; // this is readonly, don't mess with it
}
this.regs[a] = v;
}
readReg(a: number) {
switch (a) {
@ -144,7 +143,8 @@ export class ANTIC {
this.mode = this.period = 0;
// JVB (Jump and wait for Vertical Blank)
if (this.dliop & 0x40) {
this.linesleft = (248 - this.v) & 0xff; // TODO?
this.linesleft = 1; //(248 - this.v) & 0xff; // TODO?
this.dma_enabled = false;
}
} else if (this.lms) {
this.scanaddr = this.dlarg_lo + (this.dlarg_hi << 8);
@ -152,12 +152,24 @@ export class ANTIC {
}
this.startaddr = this.scanaddr;
}
// horiz scroll
// TODO: gtia fine scroll?
let pfwidth = this.pfwidth;
let effwidth = this.regs[DMACTL] & 3;
let hscroll = (this.dliop & 0x10) ? (this.regs[HSCROL] & 15) >> 1 : 0;
if ((this.dliop & 0x10) && pfwidth < 3) pfwidth++;
this.left = PF_LEFT[pfwidth] + hscroll;
this.right = PF_RIGHT[pfwidth] + hscroll;
if ((this.dliop & 0x10) && effwidth < 3) effwidth++;
this.left = PF_LEFT[effwidth] + hscroll;
this.right = PF_RIGHT[effwidth] + hscroll;
// vertical scroll
let vscrol = this.regs[VSCROL] & 0xf;
if ((this.dliop & 0x20) ^ this.vscroll) {
if (this.vscroll) {
this.linesleft -= vscrol;
} else {
this.linesleft -= vscrol;
this.yofs += vscrol;
}
this.vscroll ^= 0x20;
}
}
nextLine() {
@ -171,10 +183,10 @@ export class ANTIC {
}
triggerNMI(mask: number) {
if (this.regs[NMIEN] & mask) {
this.nmiPending = true;
}
this.regs[NMIST] = mask | 0x1f;
if (this.regs[NMIEN] & mask) {
this.nmi();
}
}
nextInsn(): number {
@ -194,23 +206,22 @@ export class ANTIC {
}
dlDMAEnabled() { return this.regs[DMACTL] & 0b100000; }
pmDMAEnabled() { return this.regs[DMACTL] & 0b001100; }
isVisibleScanline() {
return this.v >= 8 && this.v < 248;
}
isPlayfieldDMAEnabled() {
return this.dlDMAEnabled() && !this.linesleft;
return this.dma_enabled && !this.linesleft;
}
isPlayerDMAEnabled() {
return this.regs[DMACTL] & 0b1000;
return this.dma_enabled && this.regs[DMACTL] & 0b1000;
}
isMissileDMAEnabled() {
return this.regs[DMACTL] & 0b1100;
return this.dma_enabled && this.regs[DMACTL] & 0b1100;
}
clockPulse(): boolean {
let dma = this.regs[WSYNC] != 0;
let did_dma = this.regs[WSYNC] != 0;
if (!this.isVisibleScanline()) {
this.doVBlank();
} else {
@ -218,7 +229,7 @@ export class ANTIC {
case 0:
if (this.isMissileDMAEnabled()) {
this.doPlayerMissileDMA(3);
dma = true;
did_dma = true;
}
break;
case 1:
@ -230,37 +241,38 @@ export class ANTIC {
this.mode = op & 0xf;
this.dliop = op;
this.yofs = 0;
dma = true;
did_dma = true;
}
break;
case 2: case 3: case 4: case 5:
if (this.isPlayerDMAEnabled()) {
this.doPlayerMissileDMA(this.h + 2);
dma = true;
did_dma = true;
}
break;
case 6:
case 7:
if (this.yofs == 0 && this.isPlayfieldDMAEnabled() && (this.jmp || this.lms)) { // read extra bytes?
if (this.isPlayfieldDMAEnabled() && this.yofs == 0 && (this.jmp || this.lms)) {
if (this.h == 6) this.dlarg_lo = this.nextInsn();
if (this.h == 7) this.dlarg_hi = this.nextInsn();
dma = true;
}
break;
case 9:
if (this.yofs == 0) {
this.processDLIEntry();
did_dma = true;
}
break;
case 8:
// TODO? is this at cycle 8?
if (this.yofs == 0) {
this.processDLIEntry();
}
if (this.dliop & 0x80) { // TODO: what if DLI disabled?
if (this.linesleft == 1) {
this.triggerNMI(0x80); // DLI interrupt
}
}
break;
case 9:
break;
case 111:
this.nextLine();
if (this.dma_enabled) this.nextLine();
++this.v;
break;
}
@ -276,24 +288,24 @@ export class ANTIC {
if (this.dmaclock & 1) {
if (this.mode < 8 && this.yofs == 0) { // only read chars on 1st line
this.linebuf[this.dmaidx] = this.nextScreen(); // read char name
dma = candma;
did_dma = candma;
}
this.dmaidx++;
} else if (this.dmaclock & 8) {
this.ch = this.linebuf[this.dmaidx - 4 / this.period]; // latch char
this.readBitmapData(); // read bitmap
dma = candma;
did_dma = candma;
}
this.output = this.h >= this.left + 3 && this.h <= this.right + 2 ? 4 : 0;
}
}
if (this.h < 19 || this.h > 102) this.output = 2;
this.incHorizCounter();
if (!dma && this.dramrefresh) {
if (!did_dma && this.dramrefresh) {
this.dramrefresh = false;
dma = true;
did_dma = true;
}
return dma;
return did_dma;
}
incHorizCounter() {
++this.h;
@ -302,7 +314,7 @@ export class ANTIC {
case 25 + 4 * 5: case 25 + 4 * 6: case 25 + 4 * 7: case 25 + 4 * 8:
this.dramrefresh = true;
break;
case 105:
case 103:
this.regs[WSYNC] = 0; // TODO: dram refresh delay to 106?
break;
case 114:
@ -315,6 +327,9 @@ export class ANTIC {
if (this.h == 111) { this.v++; }
if (this.v == 248 && this.h == 0) { this.triggerNMI(0x40); } // VBI
if (this.v == 262 && this.h == 112) { this.v = 0; }
if (this.v == 7 && this.h == 113) {
this.dma_enabled = this.dlDMAEnabled() != 0;
}
this.output = 2; // blank
}
@ -322,11 +337,11 @@ export class ANTIC {
let oneline = this.regs[DMACTL] & 0x10;
let pmaddr = this.regs[PMBASE] << 8;
if (oneline) {
pmaddr &= 0b1111100000000000;
pmaddr &= 0xf800;
pmaddr |= section << 8;
pmaddr |= this.v & 0xff;
} else {
pmaddr &= 0b111111000000000;
pmaddr &= 0xfc00;
pmaddr |= section << 7;
pmaddr |= this.v >> 1;
}

176
src/machine/chips/gtia.ts
View File

@ -3,8 +3,8 @@
// https://user.xmission.com/~trevin/atari/gtia_regs.html
// https://user.xmission.com/~trevin/atari/gtia_pinout.html
import { dumpRAM } from "../../common/emu";
import { hex, rgb2bgr, safe_extend } from "../../common/util";
import { dumpRAM, gtia_ntsc_to_rgb } from "../../common/emu";
import { hex, lpad, safe_extend } from "../../common/util";
// write regs
@ -46,6 +46,7 @@ export class GTIA {
reset() {
this.regs.fill(0);
this.readregs.fill(0); // TODO?
this.readregs[0x14] = 0xf; // NTSC
this.count = 0;
}
saveState() {
@ -70,10 +71,12 @@ export class GTIA {
readReg(a: number) {
return this.readregs[a];
}
sync() {
this.count = 0;
}
updateGfx(h: number, data: number) {
switch (h) {
case 0:
this.count = 0;
if (this.regs[GRACTL] & 1) { this.regs[GRAFM] = data; }
break;
case 2: case 3: case 4: case 5:
@ -94,6 +97,21 @@ export class GTIA {
return 0x100; // black
}
clockPulse1(): void {
this.processPlayerMissile();
this.clockPulse2();
this.count++;
}
clockPulse2(): void {
var col: number;
if (this.pmcol >= 0) {
col = this.pmcol;
} else {
let pf = this.getPlayfieldColor();
col = pf & 0x100 ? pf & 0xff : this.regs[pf];
}
this.rgb = COLORS_RGBA[col];
}
processPlayerMissile() {
let topobj = -1;
let pfset = this.an - 4; // TODO?
let ppmask = 0;
@ -101,7 +119,7 @@ export class GTIA {
for (let i = 0; i < 4; i++) {
let bit = this.shiftObject(i);
if (bit) {
if (pfset >= 0) {
if (pfset >= 0) { // TODO: hires and GTIA modes
this.readregs[P0PF + i] |= 1 << pfset;
}
ppmask |= 1 << i;
@ -124,21 +142,9 @@ export class GTIA {
}
}
this.pmcol = topobj >= 0 ? this.getObjectColor(topobj) : -1;
this.count++;
this.clockPulse2();
}
clockPulse2(): void {
var col: number;
if (this.pmcol >= 0) {
col = this.pmcol;
} else {
let pf = this.getPlayfieldColor();
col = pf & 0x100 ? pf & 0xff : this.regs[pf];
}
this.rgb = COLORS_RGBA[col];
}
shiftObject(i: number) {
let bit = this.shiftregs[i] & 0x80000000;
let bit = (this.shiftregs[i] & 0x80000000) != 0;
this.shiftregs[i] <<= 1;
if (this.regs[HPOSP0 + i] - 7 == this.count) {
this.triggerObject(i);
@ -169,6 +175,7 @@ export class GTIA {
static stateToLongString(state): string {
let s = ''
s += `X: ${lpad(state.count, 3)} ANTIC: ${hex(state.an, 1)} PM: ${hex(state.pmcol, 3)}\n`;
s += "Write Registers:\n";
s += dumpRAM(state.regs, 0, 32);
s += "Read Registers:\n";
@ -185,141 +192,8 @@ function expandBits(x: number): number {
return x | (x << 1);
}
const ATARI_NTSC_RGB = [
0x000000, // 00
0x404040, // 02
0x6c6c6c, // 04
0x909090, // 06
0xb0b0b0, // 08
0xc8c8c8, // 0A
0xdcdcdc, // 0C
0xf4f4f4, // 0E
0x004444, // 10
0x106464, // 12
0x248484, // 14
0x34a0a0, // 16
0x40b8b8, // 18
0x50d0d0, // 1A
0x5ce8e8, // 1C
0x68fcfc, // 1E
0x002870, // 20
0x144484, // 22
0x285c98, // 24
0x3c78ac, // 26
0x4c8cbc, // 28
0x5ca0cc, // 2A
0x68b4dc, // 2C
0x78c8ec, // 2E
0x001884, // 30
0x183498, // 32
0x3050ac, // 34
0x4868c0, // 36
0x5c80d0, // 38
0x7094e0, // 3A
0x80a8ec, // 3C
0x94bcfc, // 3E
0x000088, // 40
0x20209c, // 42
0x3c3cb0, // 44
0x5858c0, // 46
0x7070d0, // 48
0x8888e0, // 4A
0xa0a0ec, // 4C
0xb4b4fc, // 4E
0x5c0078, // 50
0x74208c, // 52
0x883ca0, // 54
0x9c58b0, // 56
0xb070c0, // 58
0xc084d0, // 5A
0xd09cdc, // 5C
0xe0b0ec, // 5E
0x780048, // 60
0x902060, // 62
0xa43c78, // 64
0xb8588c, // 66
0xcc70a0, // 68
0xdc84b4, // 6A
0xec9cc4, // 6C
0xfcb0d4, // 6E
0x840014, // 70
0x982030, // 72
0xac3c4c, // 74
0xc05868, // 76
0xd0707c, // 78
0xe08894, // 7A
0xeca0a8, // 7C
0xfcb4bc, // 7E
0x880000, // 80
0x9c201c, // 82
0xb04038, // 84
0xc05c50, // 86
0xd07468, // 88
0xe08c7c, // 8A
0xeca490, // 8C
0xfcb8a4, // 8E
0x7c1800, // 90
0x90381c, // 92
0xa85438, // 94
0xbc7050, // 96
0xcc8868, // 98
0xdc9c7c, // 9A
0xecb490, // 9C
0xfcc8a4, // 9E
0x5c2c00, // A0
0x784c1c, // A2
0x906838, // A4
0xac8450, // A6
0xc09c68, // A8
0xd4b47c, // AA
0xe8cc90, // AC
0xfce0a4, // AE
0x2c3c00, // B0
0x485c1c, // B2
0x647c38, // B4
0x809c50, // B6
0x94b468, // B8
0xacd07c, // BA
0xc0e490, // BC
0xd4fca4, // BE
0x003c00, // C0
0x205c20, // C2
0x407c40, // C4
0x5c9c5c, // C6
0x74b474, // C8
0x8cd08c, // CA
0xa4e4a4, // CC
0xb8fcb8, // CE
0x003814, // D0
0x1c5c34, // D2
0x387c50, // D4
0x50986c, // D6
0x68b484, // D8
0x7ccc9c, // DA
0x90e4b4, // DC
0xa4fcc8, // DE
0x00302c, // E0
0x1c504c, // E2
0x347068, // E4
0x4c8c84, // E6
0x64a89c, // E8
0x78c0b4, // EA
0x88d4cc, // EC
0x9cece0, // EE
0x002844, // F0
0x184864, // F2
0x306884, // F4
0x4484a0, // F6
0x589cb8, // F8
0x6cb4d0, // FA
0x7ccce8, // FC
0x8ce0fc // FE
];
var COLORS_RGBA = new Uint32Array(256);
var COLORS_WEB = [];
for (var i = 0; i < 256; i++) {
COLORS_RGBA[i] = ATARI_NTSC_RGB[i >> 1] | 0xff000000;
COLORS_WEB[i] = "#" + hex(rgb2bgr(ATARI_NTSC_RGB[i >> 1]), 6);
COLORS_RGBA[i] = gtia_ntsc_to_rgb(i);
}

474
src/machine/chips/pokey.ts Normal file
View File

@ -0,0 +1,474 @@
/*
* pokey.c - POKEY sound chip emulation
*
* Copyright (C) 1995-1998 David Firth
* Copyright (C) 1998-2008 Atari800 development team (see DOC/CREDITS)
*
* This file is part of the Atari800 emulator project which emulates
* the Atari 400, 800, 800XL, 130XE, and 5200 8-bit computers.
*
* Atari800 is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Atari800 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Atari800; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
import { dumpRAM } from "../../common/emu"
import { hex, lpad, safe_extend } from "../../common/util"
const AUDF1 = 0x00
const AUDC1 = 0x01
const AUDF2 = 0x02
const AUDC2 = 0x03
const AUDF3 = 0x04
const AUDC3 = 0x05
const AUDF4 = 0x06
const AUDC4 = 0x07
const AUDCTL = 0x08
const STIMER = 0x09
const SKRES = 0x0a
const POTGO = 0x0b
const SEROUT = 0x0d
const IRQEN = 0x0e
const SKCTL = 0x0f
const POT0 = 0x00
const POT1 = 0x01
const POT2 = 0x02
const POT3 = 0x03
const POT4 = 0x04
const POT5 = 0x05
const POT6 = 0x06
const POT7 = 0x07
const ALLPOT = 0x08
const KBCODE = 0x09
const RANDOM = 0x0a
const SERIN = 0x0d
const IRQST = 0x0e
const SKSTAT = 0x0f
/* definitions for AUDCx (D201, D203, D205, D207) */
const NOTPOLY5 = 0x80 /* selects POLY5 or direct CLOCK */
const POLY4 = 0x40 /* selects POLY4 or POLY17 */
const PURETONE = 0x20 /* selects POLY4/17 or PURE tone */
const VOL_ONLY = 0x10 /* selects VOLUME OUTPUT ONLY */
const VOLUME_MASK = 0x0f /* volume mask */
/* definitions for AUDCTL (D208) */
const POLY9 = 0x80 /* selects POLY9 or POLY17 */
const CH1_179 = 0x40 /* selects 1.78979 MHz for Ch 1 */
const CH3_179 = 0x20 /* selects 1.78979 MHz for Ch 3 */
const CH1_CH2 = 0x10 /* clocks channel 1 w/channel 2 */
const CH3_CH4 = 0x08 /* clocks channel 3 w/channel 4 */
const CH1_FILTER = 0x04 /* selects channel 1 high pass filter */
const CH2_FILTER = 0x02 /* selects channel 2 high pass filter */
const CLOCK_15 = 0x01 /* selects 15.6999kHz or 63.9210kHz */
/* for accuracy, the 64kHz and 15kHz clocks are exact divisions of
the 1.79MHz clock */
const DIV_64 = 28 /* divisor for 1.79MHz clock to 64 kHz */
const DIV_15 = 114 /* divisor for 1.79MHz clock to 15 kHz */
/* the size (in entries) of the 4 polynomial tables */
const POLY4_SIZE = 0x000f
const POLY5_SIZE = 0x001f
const POLY9_SIZE = 0x01ff
const POLY17_SIZE = 0x0001ffff
const CHAN1 = 0
const CHAN2 = 1
const CHAN3 = 2
const CHAN4 = 3
const ANTIC_LINE_C = 114
/* Some defines about the serial I/O timing. Currently fixed! */
const SIO_XMTDONE_INTERVAL = 15
const SIO_SERIN_INTERVAL = 8
const SIO_SEROUT_INTERVAL = 8
const SIO_ACK_INTERVAL = 36
var poly9: Uint8Array;
var poly17: Uint8Array;
function initPolyTables() {
poly9 = new Uint8Array(511);
poly17 = new Uint8Array(16385);
/* initialise poly9_lookup */
let reg = 0x1ff;
for (let i = 0; i < 511; i++) {
reg = ((((reg >> 5) ^ reg) & 1) << 8) + (reg >> 1);
poly9[i] = reg;
}
/* initialise poly17_lookup */
reg = 0x1ffff;
for (let i = 0; i < 16385; i++) {
reg = ((((reg >> 5) ^ reg) & 0xff) << 9) + (reg >> 8);
poly17[i] = (reg >> 1);
}
}
export class POKEY {
regs = new Uint8Array(16);
readregs = new Uint8Array(16);
divnirq = new Uint32Array(4);
divnmax = new Uint32Array(4);
pot_inputs = new Uint8Array(8);
basemult = 0;
pot_scanline = 0;
random_scanline_counter = 0;
kbcode = 0;
DELAYED_SERIN_IRQ = 0;
DELAYED_SEROUT_IRQ = 0;
DELAYED_XMTDONE_IRQ = 0;
constructor(
public irq: () => void,
public antic_xpos: () => number,
) {
this.init();
}
saveState() {
return safe_extend(0, {}, this);
}
loadState(s) {
safe_extend(0, this, s);
}
init() {
/* Initialise Serial Port Interrupts */
//DELAYED_SERIN_IRQ = 0;
//DELAYED_SEROUT_IRQ = 0;
//DELAYED_XMTDONE_IRQ = 0;
this.readregs.fill(0xff);
this.readregs[SKSTAT] = 0xef;
//SERIN = 0x00; /* or 0xff ? */
//IRQEN = 0x00;
//SKCTL = 0x00;
this.basemult = DIV_64;
this.pot_inputs.fill(128);
initPolyTables();
}
read(addr: number): number {
let byte = this.readregs[addr];
addr &= 0xf;
switch (addr) {
case 0: case 1: case 2: case 3:
case 4: case 5: case 6: case 7:
byte = this.pot_inputs[addr];
return (byte < this.pot_scanline) ? byte : this.pot_scanline;
case ALLPOT:
for (let i = 0; i < 8; i++) {
if (this.pot_inputs[i] <= this.pot_scanline)
byte &= ~(1 << i); // reset bit if pot value known
}
break;
case KBCODE:
return this.kbcode;
case SKSTAT:
byte = SKSTAT + (this.CASSETTE_IOLineStatus() << 4);
break;
case RANDOM:
if ((this.regs[SKCTL] & 0x03) != 0) {
let i = this.random_scanline_counter + this.antic_xpos();
if (this.regs[AUDCTL] & POLY9)
byte = poly9[i % POLY9_SIZE];
else {
i %= POLY17_SIZE;
let ptr = i >> 3;
i &= 7;
byte = (poly17[ptr] >> i) + (poly17[ptr + 1] << (8 - i));
}
}
break;
}
return byte & 0xff;
}
write(addr: number, byte: number): void {
addr &= 0x0f;
this.regs[addr] = byte;
switch (addr) {
case AUDCTL:
/* determine the base multiplier for the 'div by n' calculations */
if (byte & CLOCK_15)
this.basemult = DIV_15;
else
this.basemult = DIV_64;
this.update_counter((1 << CHAN1) | (1 << CHAN2) | (1 << CHAN3) | (1 << CHAN4));
break;
case AUDF1:
this.update_counter((this.regs[AUDCTL] & CH1_CH2) ? ((1 << CHAN2) | (1 << CHAN1)) : (1 << CHAN1));
break;
case AUDF2:
this.update_counter(1 << CHAN2);
break;
case AUDF3:
this.update_counter((this.regs[AUDCTL] & CH3_CH4) ? ((1 << CHAN4) | (1 << CHAN3)) : (1 << CHAN3));
break;
case AUDF4:
this.update_counter(1 << CHAN4);
break;
case IRQEN:
this.readregs[IRQST] |= ~byte & 0xf7; /* Reset disabled IRQs except XMTDONE */
let mask = ~this.readregs[IRQST] & this.regs[IRQEN];
if (mask) {
this.generateIRQ(this.readregs[IRQST]);
}
break;
case SKRES:
this.readregs[SKSTAT] |= 0xe0;
break;
case POTGO:
if (!(this.regs[SKCTL] & 4))
this.pot_scanline = 0; /* slow pot mode */
break;
case SEROUT:
if ((this.regs[SKCTL] & 0x70) == 0x20 && this.siocheck()) {
this.SIO_PutByte(byte);
}
// check if cassette 2-tone mode has been enabled
if ((this.regs[SKCTL] & 0x08) == 0x00) {
// intelligent device
this.DELAYED_SEROUT_IRQ = SIO_SEROUT_INTERVAL;
this.readregs[IRQST] |= 0x08;
this.DELAYED_XMTDONE_IRQ = SIO_XMTDONE_INTERVAL;
}
else {
// cassette
// some savers patch the cassette baud rate, so we evaluate it here
// scanlines per second*10 bit*audiofrequency/(1.79 MHz/2)
this.DELAYED_SEROUT_IRQ = 312 * 50 * 10 * (this.regs[AUDF3] + this.regs[AUDF4] * 0x100) / 895000;
// safety check
if (this.DELAYED_SEROUT_IRQ >= 3) {
this.readregs[IRQST] |= 0x08;
this.DELAYED_XMTDONE_IRQ = 2 * this.DELAYED_SEROUT_IRQ - 2;
}
else {
this.DELAYED_SEROUT_IRQ = 0;
this.DELAYED_XMTDONE_IRQ = 0;
}
};
break;
case STIMER:
this.divnirq[CHAN1] = this.divnmax[CHAN1];
this.divnirq[CHAN2] = this.divnmax[CHAN2];
this.divnirq[CHAN3] = this.divnmax[CHAN3];
this.divnirq[CHAN4] = this.divnmax[CHAN4];
//POKEYSND_Update(STIMER, byte, 0, SOUND_GAIN);
break;
case SKCTL:
//VOICEBOX_SKCTLPutByte(byte);
//POKEYSND_Update(SKCTL, byte, 0, SOUND_GAIN);
if (byte & 4)
this.pot_scanline = 228; /* fast pot mode - return results immediately */
if ((byte & 0x03) == 0) {
/* POKEY reset. */
/* Stop serial IO. */
this.DELAYED_SERIN_IRQ = 0;
this.DELAYED_SEROUT_IRQ = 0;
this.DELAYED_XMTDONE_IRQ = 0;
// TODO: CASSETTE_ResetPOKEY();
/* TODO other registers should also be reset. */
}
break;
}
this.snd_update(addr);
//POKEYSND_Update(AUDC1, byte, 0, SOUND_GAIN);
}
/*****************************************************************************/
/* Module: Update_Counter() */
/* Purpose: To process the latest control values stored in the AUDF, AUDC, */
/* and AUDCTL registers. It pre-calculates as much information as */
/* possible for better performance. This routine has been added */
/* here again as I need the precise frequency for the pokey timers */
/* again. The pokey emulation is therefore somewhat sub-optimal */
/* since the actual pokey emulation should grab the frequency values */
/* directly from here instead of calculating them again. */
/* */
/* Author: Ron Fries,Thomas Richter */
/* Date: March 27, 1998 */
/* */
/* Inputs: chan_mask: Channel mask, one bit per channel. */
/* The channels that need to be updated */
/* */
/* Outputs: Adjusts local globals - no return value */
/* */
/*****************************************************************************/
update_counter(chan_mask: number): void {
/************************************************************/
/* As defined in the manual, the exact Div_n_cnt values are */
/* different depending on the frequency and resolution: */
/* 64 kHz or 15 kHz - AUDF + 1 */
/* 1 MHz, 8-bit - AUDF + 4 */
/* 1 MHz, 16-bit - AUDF[CHAN1]+256*AUDF[CHAN2] + 7 */
/************************************************************/
/* only reset the channels that have changed */
if (chan_mask & (1 << CHAN1)) {
/* process channel 1 frequency */
if (this.regs[AUDCTL] & CH1_179)
this.divnmax[CHAN1] = this.regs[AUDF1 + CHAN1] + 4;
else
this.divnmax[CHAN1] = (this.regs[AUDF1 + CHAN1] + 1) * this.basemult;
if (this.divnmax[CHAN1] < ANTIC_LINE_C)
this.divnmax[CHAN1] = ANTIC_LINE_C;
}
if (chan_mask & (1 << CHAN2)) {
/* process channel 2 frequency */
if (this.regs[AUDCTL] & CH1_CH2) {
if (this.regs[AUDCTL] & CH1_179)
this.divnmax[CHAN2] = this.regs[AUDF1 + CHAN2] * 256 + this.regs[AUDF1 + CHAN1] + 7;
else
this.divnmax[CHAN2] = (this.regs[AUDF1 + CHAN2] * 256 + this.regs[AUDF1 + CHAN1] + 1) * this.basemult;
}
else
this.divnmax[CHAN2] = (this.regs[AUDF1 + CHAN2] + 1) * this.basemult;
if (this.divnmax[CHAN2] < ANTIC_LINE_C)
this.divnmax[CHAN2] = ANTIC_LINE_C;
}
if (chan_mask & (1 << CHAN4)) {
/* process channel 4 frequency */
if (this.regs[AUDCTL] & CH3_CH4) {
if (this.regs[AUDCTL] & CH3_179)
this.divnmax[CHAN4] = this.regs[AUDF1 + CHAN4] * 256 + this.regs[AUDF1 + CHAN3] + 7;
else
this.divnmax[CHAN4] = (this.regs[AUDF1 + CHAN4] * 256 + this.regs[AUDF1 + CHAN3] + 1) * this.basemult;
}
else
this.divnmax[CHAN4] = (this.regs[AUDF1 + CHAN4] + 1) * this.basemult;
if (this.divnmax[CHAN4] < ANTIC_LINE_C)
this.divnmax[CHAN4] = ANTIC_LINE_C;
}
//console.log(chan_mask, this.divnmax);
}
snd_update(addr: number) {
}
advanceScanline() {
/***************************************************************************
** Generate POKEY Timer IRQs if required **
** called on a per-scanline basis, not very precise, but good enough **
** for most applications **
***************************************************************************/
/* on nonpatched i/o-operation, enable the cassette timing */
/*
if (!ESC_enable_sio_patch) {
if (CASSETTE_AddScanLine())
DELAYED_SERIN_IRQ = 1;
}
*/
if ((this.regs[SKCTL] & 0x03) == 0)
/* Don't process timers when POKEY is in reset mode. */
return;
if (this.pot_scanline < 228)
this.pot_scanline++;
this.random_scanline_counter += ANTIC_LINE_C;
this.random_scanline_counter %= (this.regs[AUDCTL] & POLY9) ? POLY9_SIZE : POLY17_SIZE;
if (this.DELAYED_SERIN_IRQ > 0) {
if (--this.DELAYED_SERIN_IRQ == 0) {
// Load a byte to SERIN - even when the IRQ is disabled.
this.readregs[SERIN] = this.SIO_GetByte();
this.generateIRQ(0x20);
}
}
if (this.DELAYED_SEROUT_IRQ > 0) {
if (--this.DELAYED_SEROUT_IRQ == 0) {
this.generateIRQ(0x10);
}
}
if (this.DELAYED_XMTDONE_IRQ > 0)
if (--this.DELAYED_XMTDONE_IRQ == 0) {
this.generateIRQ(0x08);
}
this.advanceIRQTimer(CHAN1, 0x1);
this.advanceIRQTimer(CHAN2, 0x2);
this.advanceIRQTimer(CHAN4, 0x4);
}
advanceIRQTimer(chan: number, mask: number) {
if ((this.divnirq[chan] -= ANTIC_LINE_C) < 0) {
this.divnirq[chan] += this.divnmax[chan];
this.generateIRQ(mask);
//console.log('irq', chan, this.divnirq[chan], this.divnmax[chan])
}
}
generateIRQ(mask: number) {
if (this.regs[IRQEN] & mask) {
this.irq();
this.readregs[IRQST] &= ~mask;
}
}
static stateToLongString(state): string {
let s = ''
s += "Write Registers:\n";
s += dumpRAM(state.regs, 0, 16);
s += "Read Registers:\n";
s += dumpRAM(state.readregs, 0, 16);
return s;
}
CASSETTE_IOLineStatus() {
return 0;
}
siocheck() {
return (((this.regs[AUDF1 + CHAN3] == 0x28 || this.regs[AUDF1 + CHAN3] == 0x10
|| this.regs[AUDF1 + CHAN3] == 0x08 || this.regs[AUDF1 + CHAN3] == 0x0a)
&& this.regs[AUDF1 + CHAN4] == 0x00) // intelligent peripherals speeds
|| (this.regs[SKCTL] & 0x78) == 0x28) // cassette save mode
&& (this.regs[AUDCTL] & 0x28) == 0x28;
}
SIO_PutByte(byte: number) {
// TODO
console.log("SIO put byte", byte);
}
SIO_GetByte() {
return 0; // TODO
}
}
//const SOUND_GAIN 4
/*
void Frame(void)
{
random_scanline_counter %= (this.regs[AUDCTL] & POLY9) ? POLY9_SIZE : POLY17_SIZE;
}
*/